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- Pesquisa de Listeria monocytogenes em produtos cárneos fumados e de salsichariaPublication . Vaz-Velho, Manuela; Almeida, Gonçalo; Mena, Cristina; Carneiro, Luisa; Freitas, António
- Comparison of milk from two different cow breeds Barrosã and FrísiaPublication . Pires, Preciosa; Fernandes, Élia; Vilarinho, Manuela; Barros, Mário; Ferreira, Rita; Carneiro, Luísa; Almeida, Gonçalo; Vaz-Velho, ManuelaMilk from two different cow breeds, Barrosã and Frísia, was studied. Within the same breed five and four milk samples were taken respectively for chemical and microbiological analysis. The following chemical parameters were analysed in triplicate: Total Fat, Fatty Acids Identification and Quantification, Protein, Casein, Albumin, Non-protein Nitrogen, Vitamin A, Vitamin D, Phosphorus, Potassium, Sodium, Iron, Magnesium, Calcium, Ash, Total solids, Lactic acid and Acidity. In general terms milk from Barrosã breed showed higher values for all analysed parameters except for Total Fat, Total Solids and Vitamin D. Statistical analysis, by testing the chemical parameters all together using the Hotelling T2 test showed that milk samples from the two cow breeds were significantly different (α=0,05). Microbiological analysis (Total Viable Counts (30ºC), Escherichia coli, Staphylococcus coagulase + and Listeria monocytogenes) was also performed. Staphylococcus coagulase + was found in one milk sample from Barrosã breed. Listeria monocytogenes was found in two milk samples from Frísia breed.